Applicability of the Dirac-Fock method combined with Core Polarization in calculations of alkali atoms
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866908974722318336 |
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| author | Bobylev, A. A. Lopez-Rodriguez, J. J. Kvasov, P. A. Reiter, M. A. Solovyev, D. A. Zalialiutdinov, T. A. |
| author_facet | Bobylev, A. A. Lopez-Rodriguez, J. J. Kvasov, P. A. Reiter, M. A. Solovyev, D. A. Zalialiutdinov, T. A. |
| contents | In this work, we investigate the applicability of the core-polarization-corrected Dirac--Fock method, formulated within the framework of the local Dirac--Hartree--Fock (LDF) potential, for the accurate determination of static scalar and tensor electric dipole polarizabilities. This work presents theoretical values of blackbody-radiation-induced Stark shifts of atomic energy levels. The Dirac--Fock method augmented by core-polarization corrections is employed not only to evaluate these shifts but also to compute the Bethe logarithm for alkali-metal atoms. The results are critically compared with data available in the contemporary literature, and the strengths and limitations of the present approach are discussed. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2601_21723 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Applicability of the Dirac-Fock method combined with Core Polarization in calculations of alkali atoms Bobylev, A. A. Lopez-Rodriguez, J. J. Kvasov, P. A. Reiter, M. A. Solovyev, D. A. Zalialiutdinov, T. A. Atomic Physics In this work, we investigate the applicability of the core-polarization-corrected Dirac--Fock method, formulated within the framework of the local Dirac--Hartree--Fock (LDF) potential, for the accurate determination of static scalar and tensor electric dipole polarizabilities. This work presents theoretical values of blackbody-radiation-induced Stark shifts of atomic energy levels. The Dirac--Fock method augmented by core-polarization corrections is employed not only to evaluate these shifts but also to compute the Bethe logarithm for alkali-metal atoms. The results are critically compared with data available in the contemporary literature, and the strengths and limitations of the present approach are discussed. |
| title | Applicability of the Dirac-Fock method combined with Core Polarization in calculations of alkali atoms |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2601.21723 |